linux-kernel - [PATCH v2 0/2] Add support to get/set PHY attributes using PHY framework

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Date:   Tue, 26 May 2020 16:35:02 +0200
From:   Yuti Amonkar <yamonkar@...ence.com>
To:     <linux-kernel@...r.kernel.org>, <kishon@...com>,
        <robh+dt@...nel.org>, <mark.rutland@....com>, <maxime@...no.tech>
CC:     <nsekhar@...com>, <jsarha@...com>, <tomi.valkeinen@...com>,
        <praneeth@...com>, <mparab@...ence.com>, <sjakhade@...ence.com>,
        <yamonkar@...ence.com>
Subject: [PATCH v2 0/2] Add support to get/set PHY attributes using PHY framework

This patch series adds support to use kernel PHY subsystem APIs to get/set PHY
attributes like number of lanes and maximum link rate.

It includes following patches:

1. v2-0001-phy-Add-max_link_rate-as-a-PHY-attribute-and-APIs.patch 
This patch adds max_link_rate as a PHY attribute along with a pair of APIs that
allow the generic PHY subsystem to get/set PHY attributes supported by the PHY.
The PHY provider driver may use phy_set_attrs() API to set the values that PHY supports.
The controller driver may then use phy_get_attrs() API to fetch the PHY attributes in 
order to properly configure the controller.

2. v2-0002-phy-phy-cadence-torrent-Use-kernel-PHY-API-to-set.patch
This patch uses kernel PHY API phy_set_attrs to set corresponding PHY properties
in Cadence Torrent PHY driver. This will enable drivers using this PHY to read 
these properties using PHY framework.

The phy_get_attrs() API will be used in the DRM bridge driver [1] which is in process of upstreaming.

[1]

https://lkml.org/lkml/2020/2/26/263

Version History:

v2:
    - Implemented single pair of functions to get/set all PHY attributes

Swapnil Jakhade (1):
  phy: phy-cadence-torrent: Use kernel PHY API to set PHY attributes

Yuti Amonkar (1):
  phy: Add max_link_rate as a PHY attribute and APIs to get/set
    phy_attrs

 drivers/phy/cadence/phy-cadence-torrent.c |  7 +++++++
 include/linux/phy/phy.h                   | 25 +++++++++++++++++++++++
 2 files changed, 32 insertions(+)

-- 
2.17.1